package comp {
	/**
	 * ...
	 * @author wibrst@qq.com
	 */
	public /*abstract*/ class Beverage{
		
		public function Beverage() {
			//this._sDesc = "Unknown Beverage";
			//this._nCost = 0;
		}
		
		public function getDesc():String {
			return this._sDesc;
		}
		
		public /*abstract*/ function cost():Number {
			return this._nCost;
		}
		
		protected var _sDesc:String;
		protected var _nCost:Number;
	}

}